Support for motion-picture-projector drive shafts



Mayl, 1934. A. :RNA 1,957,201

SUPPORT POR ROT-ION PICTURE PROJECTOR DRIVE ,sHAPTs Filed June 25, 1930 5 Sheets-Sheet 1 y 1 f6 55 56 Q6 INVENTQR l, BY i I2' l y ,Mfw

ATTQRNEYS A. DINA Ma.;t l, 1934.y

SUPPORTF'OR MOTI'ON PICTURE PROJECTOR DRIVE SHAFTS Filed June 25, 19:50 5 sheets-sheet 2 ATroRNEYS Mayv l, 1934.' A. DINA 1,957,201

SUPPORT FOR MOTION PICTURE PROJECTOR DRIVE SHAFTS Filed June '25, 1930 5 sheets-Sheet a ATTORN EYQ J lNA May l, 1934.

SUPPOR;` FOR MOTION PICTURE PROJECTOR DRIVE HAFTS Filed June 25, 195o 5 sheets-sheet 4 ATToRNl-:YJ

May 1, 1934. A. um 1,957,201 1 suPPoR';1 Fon MOTION PICTURE PROJECTOR DRIVE SHAFTS I Filed June 25, 1950 5 Sheets-Sheet 5 w w INVENTOR BY l Patented May .1, 1934 p SUPPORT FOR MOTION-PICTURE- PROJECTOR DRIVE SHAFTS Augusto Dina, Elizabeth, N. J., assigner to International Projector Corporation, New York, N. Y., a corporation of Delaware Application June 25, 1930, Serial No. 463,714

4 Claims. (Cl. 88-17) This invention relates to projection machines, vorder named. These sprockets and the driving and more particularly toy a new and improved mechanism therefor are mounted on a vertical support for the driving mechanism of a. portable frame 25 which is carried by casing 10 in any projection machine. convenient manner as by fianges 26 to which 5 An object of the invention is to provide a cheap, said frame may be riveted. 60 simple; compact and efficient support for vthe Sprockets and 22 and shutter shaft 30 are drive shafts and gears of a projection head. driven from a vertical drive shaft 31. Intermit- The invention also consists in certain new and tent sprocket 21 is driven from shutter shaft 30 original features of construction and combinaby suitable gears. Sprockets 23 and 24 are driven l0 tions o-f parts hereinafter set forth and claimed. from vertical drive shaft 32. Shafts 31 and 32 65 Although-the novel features which are believed are driven from the main horizontal drive shaft to-be lcharacteristic of this invention will be par- 33 which is connected through clutch 34 to drive ticularly pointed out in the claims appended shaft 35. Said shaft 35 is connected to a motor hereto, the invention itself, as to its objects and 11 through a flexible coupling 36. advantages, the mode of its operation and the The arrangement of the drive shafts above 70 manner of its organization may be better underdescribed and the mechanism for driving the stood by referring to the following description various sprockets are set forth in my copending taken in connection with the accompanying application for Portable talking picture projector drawings forming a part thereof, in which 4 Serial No. 425,297, filed February l, 1930, Patent 20 Fig. l is a side elevation of a projection head 1,933,545. The present IiVffIltiOn DaltCularly 75 showing the driving mechanism and support; relates to the mechanical support for the various Fig. 2 is a` transverse section taken on the line driving Shafts- 2-2 of Fig. 1; Shafts 31 and 32 are secured in bosses 40 and Fig. 3 is an enlarged detail of the supporting 41 which are formed in bracket 42. Said bosses mechanism; are drilled to provide suitable bearings for shafts 80 Fig. 4 is a side elevation of the supporting 31and 32. Gear Wheel 43 is mounted on shaft bracket for the main drive shaft; 32 in engagement with boss 40 and forms a thrust Fig. 5 is a tcp plan view 0f the improved supbearing for said shaft 32. A similar gear wheel port; forms a thrust bearing for shaft 3l. Bracket 42 Fig. 6 is a section taken on the line 6-6 of .iS DI'OVided With a plurality 0f eXtenSiOnS 45 85 Fig. 3; which are drilled to receive bolts 46.

Fig. '7 is a section taken on the line 7-7 of Shaft 33 iS mOUIited in a drive Shaft Support Fig. 3; 4'7 which is provided with a plurality of tubular Fig. 3 is a section taken on the line 8-8 of projections 48 in alignment with projections 45 Fig. 3; of bracket 42 and drilled to receive bolts 46. Sup- 90 Fig. 9 is a rear elevation of the support; and port 47 is mounted on bracket 42 and the entire Fig. 10 is a front elevation 0f the support y assembly held in position on frame 25 by bolts 46. Like reference characters denote like parts Support 47 is provided with a plurality 0f bearin the sevcrmgures of the drawings, ings 50 in which shaft 33 is journalled. Said In the following description and in the claims shaft is provided .with aplurality 0f gears 51 which 95 parts will be identified by specific names forconmesh With COODGrating gears 0n Shafts 31 and 32. venience, but they are intended to be as generic Shaft 33 iS held against longitudinal diSDlaCein their application to similar parts as the art ment by Said gears 51 and by COllaI'S 53 WhiCh are will permit. f mounted on said shaft in engagement with bear- 5 Referring to the drawings more in detail the ings 50. A clutch element 54 is secured to the 100 invention is shown as applied to a projection head end 0f Shaft 33 in a DOSitiOn t0 engage CllltCh 34 for a portablepr'ojection machine having a casfor connecting the various shafts in driving reing l0 carrying a driving motor 11, film driving lationship. l apparatus to be described, and a light system vShaft 35 is mounted in bracket 55 which is procomprising lamp 12, reflector l3,lens assembly 14 vided with a pair of lateral projections 56 in 105 and shutters 15. which said shaft is journalled. Bracket 55 is The film drive comprises an upper feed sprockmounted on frame 25 in any convenient manner.

let '20 intermittent SDrOCket 21, continuous A gear 57 is carried on shaft 35 between projec- ,sprocket 22, sound sprocket. 23 and lower feed tions 56 in driving relationship with take-up 55 sprocket 24, over which the lm is passed in the mechanism 59. l 110 -.noted that the various In the above described mechanism it is to be units of the device may be independently removed, for example, shaft 35 is entirely supported in bracket 55 and may be removed from the machine for purposes of inspection of repair by disconnecting flexible coupling member 36 and removing bracket 55. Drive shaft 33 may be taken from the machine by loosening bolts 46 and removing supporting member 47 in which said shaft is journalled. All of this may be accomplished without disturbing bracket 42 which supports shafts 31 and 32. The lower shafts may be removed from the projection head as a unit with bracket 42, or they may be ,'released from their bearings 40 and 41 without disturbing said bracket.

It is to be understood that suitable gears interconnect the various shafts above described and that suitable lubricating means is provided for each of the bearings. The particular driving mechanism for the various sprockets and the shutter is not described herein in detail, since they form no part of the present invention.

It is to be noted that clutch 34 permits the driving motor to be disconnected from the various sprockets and enables the take-up mechanism 59 to be operated independently, for example, in rewinding a film. Flexible coupling 36 serves to take up any inequalities in drive and prevents strains in various parts. It is to be understood that various fly wheels and flexible couplings may be employed for other parts of the mechanism, as for example, ily wheel 60 and flexible coupling memberl in connection with sound sprocket 23 and fly wheel 62 in connection with the drive for intermittent sprocket 21.

While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that various omissions, substitutions and changes in the forms and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.

What is claimed is:

1. In a projection head, a vertical frame carrying a lm driving apparatus, a plurality of vertical drive shafts operatively associated with said apparatus, a bracket carrying said drive shafts, a horizontal drive shaft in driving engagement with said vertical shafts, a support carrying said horizontal shaft, means for mounting said support on said bracket comprising a plurality of bosses formed on said bracket and said support respectively in aligned positions, and securing means extending through said bosses and said frame.

2. In a projection head, a vertical frame carrying a film driving apparatus, a pair of vertical drive shafts in driving engagement with said apparatus, a bracket secured to said frame and carrying said shafts, a horizontal drive shaft in driving engagement with said vertical shafts, a support for said horizontal shaft, said support being mounted on said bracket, a driving motor, a main driving shaft associated therewith, a bracket carrying said driving shaft in alignment with said horizontal shaft and a clutch for selectively connecting said driving shaft to said horizontal shaft.

3. In a projection head, a vertical frame carrying a film driving apparatus, a plurality of vertical drive shafts operatively associated therewith, a bracket secured on said frame, said bracket having a plurality of bosses in which said vertical drive shafts are journalled, a horizontal drive shaft in driving engagement with said vertical shafts, a supporting plate for said horizontal shaft having a plurality of bearings located centrally thereof, said plate having a plurality of projections around the periphery thereof, projections formed on said bracket in engagement with said peripheral projections and adapted to position said plate, securing means extending through said projections, a main driving shaft and a clutch interconnecting said main driving shaft and said horizontal shaft.

4. In a projection-head, a vertical frame carrying a film driving apparatus, a plurality of vertical drive shafts operatively associated therewith, a bracket secured on said frame, said bracket having a plurality of bosses in which said vertical drive shafts are journalled, a horizontal drive shaft in driving engagement with said vertical shafts, a supporting plate for said horizontal shaft having a plurality of bearings located centrally thereof, said plate having a plurality of projections around the periphery thereof, projections formed on said bracket in engagement with said peripheral projections and adapted to position said plate, securing means extending through said projections, a main driving shaft and a clutch interconnecting said main driving shaft and said horizontal shaft and a bracket carrying said mainflriving shaft and secured to said vertical' frame independently of said first mentioned bracket.

AUGUSTO DINA. 

